Improvement in type-casting machines



timidi ,t-aia tutti effet,

Letters Patent NaI-10,302, dated December 20,1810,

IMPROVEMNT IN TYPE-CASTING MACHINES.

' Ifo all whom it may concern.'

Be it known that I, WILLIAM SPANG, of the city and county-of Philadelphia, State of Pennsvlvania, have' invented anew and useful Improvement in TypelOasting Machines 5 and Ido hereby declare that the following is afull, clear, and yexactdescription of the construction aud operation of thesame, reference being had to the accompanying drawing and to the letters of reference marked thereon. The object of my invention consists in providing a simple mechanism for eiectually tripping the matrixlever and opening and closingthe mold in typecasting machines.

To accomplish this, I alter the' form of one end of the curved arm (which is pivoted to the front part of the oscillatory frame) and insert it in' a sliding head of peculiar construction, so that when power is applied t the machine it will produce a reciprocating motion of the head .and cause it, on the upstroke, to pass under and .trip the matrix-lever, and,'at the same time, to open the mold through a rodconnected with itan'dthe head. The vhead ou the down-stroke closesr the mold and releases the matrix-lever.

Figure 1 is a front elevation of that portion of 4a type-casting machine embodying my invention. A Figure 2 is a perspective view of the curved arm; j' Figure 3 is a perspective view of the sliding head, with one part separatedfrom it. j j Toenable those skilled in the art to make 'and use l my invention, I will now proceed to describe its constructonfand operation. A

f. lhe'arm B, made in the forni as shown in tig. 2, is

' pivoted at the point Pto thev face of the oscillatory frame-O', with the' opposite end S inserted in a rectangular opening, O, made in the sliding head A.

Connected with the said arm, through an opening, N, is a rod, F, the lower end of which' works by means of. a ball-joint in a box, Gr, secured to the bedplate T.

A guide, H, through which the arm B passes and works, is secured to the frame C, for the purpose of holding it (the arm) closely in contact with the frame.

- The sliding head A is made in the forln-as'shown in iig. 3, and -has passing transversely through and near its rupper en d a rectangular-shaped opening, O, in which is inserted the end S of the arm B, and passing through itin an opposite direction is an opening,

O', in which is inserted a block, J.

The saidblock is pivoted in the opening by passin a. pin, L, through it and the sides otl the head.

In order to give additional bearing surface t0 the head A, it is made somewhat wider at the base, and the projecting edges R and It leveled or tapered off to suit corresponding grooves'formed on the frame C.

One of these grooves is made by tapering the inner edge of an adjustable plate, M, so that it can be set up in case-the` head wears away.

4The Bchedule referred tu in these* Letten Patent and making part of l'the same.

The head thus constructed is placed at the proper angle and position-on the frame O, and the end S of the arm B inserted in the opening O. v

Thelowerend of a rod, E, is then secured in the block J, and-the pposite endof it (the rod) .is extended up and attached to the upper mold-block K.

. On the right-hand side of the said'rod, and pivoted to the lower mold-block K', is the matrix-lever D, the lower end of' which is provided with a friction-wheel, W, which revolves on a projection, Y, formed 0u the outer surface of the head A. i

yThe ii-iction-wheel W is pivoted to a sliding'box, I, which -incloses the lever, and is retained on it by means of a set-screw, sothat the wheel is adjusted to a properv position. in order to allow the upper end of the sliding head A, when in inotion, to come in contact with it audthus raise and trip the lever.

rlheY sliding head A isfdesigned to have a perfect parallel motion,'and for this purpose th'e end S o'f the arm B has its lower andu'pper (or bearing) edges curved suliciently to permit of a rocking Inotibn, and thus allowthe head to slide freely up and down in the grooves, without deviating from its direct line of travel.

The rod E is so pivoted to the block J as to permit of the slightest lateral motion, and so that -it can also be turned in any direction when its upper end is released from the mold-block K.`

The resist-anceoftherod F causes the end of the arm B nearest the sliding head to move through an arc f a circle when the frame C is vibrated to and Vfro; and the ball-joint, by which the said rod is connected with the box G, -allows it (the rod) to have a vibrating and lateral motion, so as to adapt itself to the varying positions of the arm.

Havingv thus described my invention, WhatI claim, and desire to secure by Letters Pat# ent ofthe AUnited States, is-

1. The arm B and` sliding head A, constructed as herein described, and arranged on the oscillating4 WILLIAM SPANG.

Witnesses ISAAC OAKFORI), Gao. E. NICHOLS. 

